New Physics simulations:
These sites investigate Electric Forces and Field lines
http://www.colorado.edu/physics/2000/waves_particles/wavpart3.html
http://qbx6.ltu.edu/s_schneider/physlets/main/efield.shtml
http://physics.weber.edu/schroeder/software/EField/
I could not download the JAVA component on my office desktop. Please try on your own system.
http://surendranath.tripod.com/Applets/Electricity/FieldLines/FieldLinesApplet.html
http://webphysics.davidson.edu/physlet_resources/bu_semester2/index.html
This Site investigates several aspects of Electricity and Magnetism from a somewhat advanced mathematical level. Don't worry about the advanced equations, we will address them at some point in the class.
http://links.math.rpi.edu/webhtml/EMindex.html